# 引用 指向内存空间
shopList = ['apple', 'mango', 'carrot', 'banana']
newList= shopList

print(shopList)
print(newList)

del  newList[0]
print(shopList)

# 切换拷贝生成了新的地址段
newList=shopList[:]
del newList[0]
print(shopList)
print(newList)
